To provide a glass laminating bag, with which a laminated glass product having a complicated shape can be easily produced.

In the glass laminating bag B equipped with an upper cloth 3, a lower cloth 4, and a sealing member 5 for sealing the peripheral edge of the cloths to be freely opened /closed, a forming section 9 having a shape corresponding to the shape of the laminated glass to be produced is provided in the upper cloth and the lower cloth. The laminated glass having the complicated shape can be produced by previously forming the upper cloth and the lower cloth so as to correspond to the shape of a flower vase, a glass, a curved glass or the like, then arranging a laminated body comprising two transparent sheets and an interlayer put and bonded between the sheets on the formed forming section, thereafter making vacuum the inside of the glass laminating bag, and at the same time, heating by hot air from outside.